IOOverrides class Null safety

Facilities for overriding various APIs of dart:io with mock implementations.

This abstract base class should be extended with overrides for the operations needed to construct mocks. The implementations in this base class default to the actual dart:io implementation. For example:

class MyDirectory implements Directory {
  ...
  // An implementation of the Directory interface
  ...
}

void main() {
  IOOverrides.runZoned(() {
    ...
    // Operations will use MyDirectory instead of dart:io's Directory
    // implementation whenever Directory is used.
    ...
  }, createDirectory: (String path) => new MyDirectory(path));
}

Constructors

IOOverrides()

Properties

hashCode → int: The hash code for this object.
read-onlyinherited
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
stderr → Stdout: The standard output stream of errors written by this program.
read-only
stdin → Stdin: The standard input stream of data read by this program.
read-only
stdout → Stdout: The standard output stream of data written by this program.
read-only

Methods

createDirectory(String path) → Directory: Creates a new Directory object for the given path.
createFile(String path) → File: Creates a new File object for the given path.
createLink(String path) → Link: Returns a new Link object for the given path.
fseGetType(String path, bool followLinks) → Future<FileSystemEntityType>: Asynchronously returns the FileSystemEntityType for path.
fseGetTypeSync(String path, bool followLinks) → FileSystemEntityType: Returns the FileSystemEntityType for path.
fseIdentical(String path1, String path2) → Future<bool>: Asynchronously returns true if path1 and path2 are paths to the same file system object.
fseIdenticalSync(String path1, String path2) → bool: Returns true if path1 and path2 are paths to the same file system object.
fsWatch(String path, int events, bool recursive) → Stream<FileSystemEvent>: Returns a Stream of FileSystemEvents.
fsWatchIsSupported() → bool: Returns true when FileSystemEntity.watch is supported.
getCurrentDirectory() → Directory: Returns the current working directory.
getSystemTempDirectory() → Directory: Returns the system temporary directory.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed.
inherited
serverSocketBind(dynamic address, int port, {int backlog = 0, bool v6Only = false, bool shared = false}) → Future<ServerSocket>: Asynchronously returns a ServerSocket that connects to the given address and port when successful.
setCurrentDirectory(String path) → void: Sets the current working directory to be path.
socketConnect(dynamic host, int port, {dynamic sourceAddress, int sourcePort = 0, Duration? timeout}) → Future<Socket>: Asynchronously returns a Socket connected to the given host and port.
socketStartConnect(dynamic host, int port, {dynamic sourceAddress, int sourcePort = 0}) → Future<ConnectionTask<Socket>>: Asynchronously returns a ConnectionTask that connects to the given host and port when successful.
stat(String path) → Future<FileStat>: Asynchronously returns FileStat information for path.
statSync(String path) → FileStat: Returns FileStat information for path.
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

current → IOOverrides?: read-only
global ← IOOverrides?: The IOOverrides to use in the root Zone.
write-only

Static Methods

runWithIOOverrides<R>(R body(), IOOverrides overrides) → R: Runs body in a fresh Zone using the overrides found in overrides.
runZoned<R>(R body(), {Directory createDirectory(String)?, Directory getCurrentDirectory()?, void setCurrentDirectory(String)?, Directory getSystemTempDirectory()?, File createFile(String)?, Future<FileStat> stat(String)?, FileStat statSync(String)?, Future<bool> fseIdentical(String, String)?, bool fseIdenticalSync(String, String)?, Future<FileSystemEntityType> fseGetType(String, bool)?, FileSystemEntityType fseGetTypeSync(String, bool)?, Stream<FileSystemEvent> fsWatch(String, int, bool)?, bool fsWatchIsSupported()?, Link createLink(String)?, Future<Socket> socketConnect(dynamic, int, {dynamic sourceAddress, int sourcePort, Duration? timeout})?, Future<ConnectionTask<Socket>> socketStartConnect(dynamic, int, {dynamic sourceAddress, int sourcePort})?, Future<ServerSocket> serverSocketBind(dynamic, int, {int backlog, bool shared, bool v6Only})?, Stdin stdin()?, Stdout stdout()?, Stdout stderr()?}) → R: Runs body in a fresh Zone using the provided overrides.